The drill site varies as the geography of the earth varies. In the early days of the oil industry, geologists and wildcatters avoided terrain that was difficult to get to. Oil was easy to find in those days. As people began to use more and more oil geologists had to go to all corners of the globe.
Today, companies drill wells in frozen wildernesses, deserts, marshes, jungles, mountains, and deep offshore waters. The red dots on the map show locations where oil has been found.
[[Oil and Gas Reservoirs]]